Coherent transport of matter waves
نویسنده
چکیده
A transport theory for atomic matter waves in low-dimensional waveguides is outlined. The thermal fluctuation spectrum of magnetic near fields leaking out of metallic microstructures is estimated. The corresponding scattering rate for paramagnetic atoms turns out to be quite large in micrometer-sized waveguides (approx. 100/s). Analytical estimates for the heating and decoherence of a cold atom cloud are given. We finally discuss numerical and analytical results for the scattering from static potential imperfections and the ensuing spatial diffusion process. PACS: 03.75.-b Matter waves – 32.80.Lg Mechanical effects of light on atoms and ions – 05.60.C Classical transport – 05.40.-a Fluctuation phenomena and noise
منابع مشابه
Coherent Transport
We discuss the transport of matter waves in low-dimensional waveg-uides. Due to scattering from uncontrollable noise fields, the spatial coherence gets reduced and eventually lost. We develop a description of this decoherence process in terms of transport equations for the atomic Wigner function. We outline its derivation and discuss the special case of white noise where an analytical solution ...
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